Artificial diamond as a next generation material for gas sensors

Diamond-based gas sensors have drawn a lot of interest because of their remarkable resilience, stability, and sensitivity in harsh conditions. Artificial diamonds have emerged as a cornerstone material in advanced technology due to their exceptional physical, chemical, and optical properties. The wide bandgap, chemical inertness, and superior thermal conductivity of diamonds are utilized by these sensors to provide excellent resistance to extreme temperatures and severe environments. The sensitivity of the sensor to various gases is enhanced by hydrogen-terminated diamond surfaces, which enable p-type surface conductivity through charge transfer interactions. Advances in chemical vapor deposition techniques have increased the availability of high-quality diamond films for microfabricated sensor systems. Applications of diamond in environmental monitoring and industrial safety, with a focus on detecting dangerous gases including CO, NO_x, and volatile organic compounds, have been the main focus of the review. This review provides a comprehensive recent report on diamond based gas sensors, emphasizing the comparative analysis of the different diamond structures, challenges associated with them, as well as possible directions for the future. This review is really helpful for researchers looking to employ artificial diamonds in extreme conditions for the detection of gases to develop solutions in an emerging technological context.